Browsing by Author "Gülgönül, İlhan"
Now showing items 1-11 of 11
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Concentration of K-feldspar from a pegmatitic feldspar ore by flotation
Karagüzel, Cengiz; Gülgönül, İlhan; Demir, Cengiz; Çınar, Mehmet Ulaş; Çelik, Mehmet S. (Elsevier Science Bv, 2006)Abundant reserves of Na-feldspar (albite) and K-feldspar (orthoclase or microcline) are found in granites, syenite, tracite and pegmatites. As both feldspar minerals have similar chemical structure and physicochemical ... -
Differential separation of albite from microcline by monovalent salts in HF medium
Demir, Cengiz; Gülgönül, İlhan; Bentli, İsmail; Çelik, Mehmet S. (Soc Mining Metallurgy Exploration Inc, 2003)Na-feldspar (albite) and K-feldspar (microcline or orthoclase) are major feldspar minerals with identical crystal structures and physico-chemical properties. Flotation appears to be a unique method of separating these ... -
Effect of crystallinity and surface silanol groups on rheological properties of different sepiolites
Çınar, Mustafa; Gülgönül, İlhan; Özdemir, Orhan; Çelik, Mehmet Sabri (Oficyna Wydawnicza Politechniki Wroclawskiej, 2022)In this study, differences in the rheological properties of three different types of brown sepiolites (K1, K2, and K3) along with one beige (B) sepiolite with different physicochemical properties were explained based on ... -
Effects of bivalent salts on the flotation separation of Na-feldspar from K-feldspar
Demir, Cengiz; Bentli, İsmail; Gülgönül, İlhan; Çelik, Mehmet Sabri (Pergamon-Elsevier Science Ltd, 2003)Despite similarities in the physical and physico-chemical properties of Na- and K-feldspars, their flotation separation with monovalent ions exhibited a reasonable success. Further studies have been therefore initiated to ... -
Evaluation of Turkish bentonite for removal of dyes from textile wastewaters
Gülgönül, İlhan (Oficyna Wydawnicza Politechniki Wroclawskiej, 2012)Removal of reactive dyes from textile industry wastewaters is a great economic and environmental challenge. In this study, systematic adsorption tests were carried out using natural and modified bentonites to remove a ... -
Interaction of sodium ions with feldspar surfaces and its effect on the selective separation of na- and k-feldspars
Gülgönül, İlhan; Karagüzel, Cengiz; Çınar, Mehmet Ulaş; Çelik, Mehmet S. (Taylor & Francis Inc, 2012)K-feldspar and Na-feldspar exhibit similar mineralogical, chemical and surface properties. Froth flotation is known to be the only technique to enable their separation. Our earlier studies revealed a good selectivity in ... -
Selective separation of sodium and potassium feldspar minerals from orebodies
Demir, Cengiz; Karagüzel, Cengiz; Gülgönül, İlhan; Çelik, Mehmet S. (Trans Tech Publications Ltd, 2004)Feldspar minerals are major commodities used in the production of glass and ceramics. A major proportion of feldspar rocks such as granites, pegmatites and nepheline syenites embody both Na-feldspar (Albite) and K-feldspar ... -
A study of surface morphology of small magnesite ore blocks using numerical computations
Bayırlı, Mehmet; Gülgönül, İlhan (Gebruder Borntraeger, 2016)Determination of morphological structure of natural ore is an important concept. Although there are many studies related to the determination of the chemical structure of minerals, there has not been much work about the ... -
Surface vs. bulk analyses of various feldspars and their significance to flotation
Gülgönül, İlhan; Karagüzel, Cengiz; Çelik, Mehmet S. (Elsevier Science Bv, 2008)Cationic separation of Na-feldspar (albite) and K-feldspar (microcline) was earlier reported to be possible in the presence of monovalent salts. However, contrary to this result, the floatability of a series of K-feldspar ... -
Understanding the flotation separation of Na and K feldspars in the presence of KCl through ion exchange and ion adsorption
Gülgönül, İlhan; Çelik, Mehmet S. (Pergamon-Elsevier Science Ltd., 2018)Flotation is the only technique that enables the selective separation of Na and K feldspar minerals from each other. In this study, the flotation separation of Na-feldspar (albite) and K-feldspar (microcline) minerals were ... -
Zeta potential of teflon in presence of monovalent and divalent ions
Gülgönül, İlhan (Oficyna Wydawnicza Politechniki Wroclawskiej, 2019)In this study, the specific effects of Na+ and Ca2+ ions on natural hydrophobic Teflon particles and flat Teflon surfaces were investigated using zeta potential and contact angle measurements, respectively. The zeta potential ...
